This fledgling automaker is on sale right before its revenue could skyrocket.Want to add a massive growth stock to your portfolio without paying a huge premium? This is your chance. Right now, there's an EV stock that's preparing for a huge growth spurt, yet its shares have seen a dramatic reduction in value given selling pressures across the rest of its industry.You'll have to be strategic, but your portfolio could experience huge gains if you're willing to stay patient.Expect this company's sales to skyro ...